Browsing by Autor "Christian Rolando"

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    Análisis del dictamen No. 023-10-DTI-CC de la Corte Constitucional para el período de transición referente al “Tratado entre la República del Ecuador y la República Federal de Alemania sobre fomento y recíproca protección de inversiones de capital”: (Caso No. 0006-10-TI) [Jurisprudencia]
    (2012) Masapanta Gallegos; Christian Rolando
    In this study, melanin from wild Auricularia auricula (WAA) was isolated using an ultra-high pressure (UHP)-assisted extraction method, and the physicochemical properties and antioxidant activity of WAA melanin were investigated. Under the optimized extraction conditions of a solid/liquid ratio of 1:30, a UHP of 450 MPa, a 22-min pressure holding time, a 1-mol/L NaOH concentration, and acid precipitation for 8 h, the WAA melanin extraction yield was 7.9 ± 0.16%. Moreover, the results showed that the surface of WAA melanin lacked structural order. Most melanin showed an average diameter of 1000 nm. WAA melanin had strong absorption at a wavelength of 210 nm and displayed typical characteristic absorption peaks. Moreover, WAA melanin contained 48.51% C, 6.88% H, 5.26% N, 0.45% S, and 38.90% O and may be a 3,4-dihydroxyphenylalanine melanin. An analysis of physicochemical properties showed that WAA melanin had good stability toward heat, light, and low concentrations of reducing agents and oxidizing agents. Furthermore, WAA melanin presented certain free radical scavenging activity. This study demonstrates that wild A. auricula melanin may have potential applications in the cosmetic or food industries as a natural antioxidant.
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    Comentarios al proceso de integración europea desde una perspectiva migratoria latinoamericana. La Unión Europea frente a los inmigrantes no comunitarios
    (2009) Masapanta Gallegos; Christian Rolando
    Este articulo analiza como el proceso de integracion de la Union Europea, por un lado, favorece a la libre circulacion de mercaderias, capitales y de ciudadanos comunitarios, bajo la perspectiva de un sistema de integracion profundo, y, por otro, paulatinamente ha dejado de lado a los denominados “otros no comunitarios”, a traves de las denominadas “directivas de retorno” y la implementacion de medidas tendientes hacia la criminalizacion de la migracion, lo cual refleja una vulneracion a los derechos fundamentales de la poblacion inmigrante contrariando la tendencia moderna hacia una ciudadania universal. This article analyzes how the process of integration in the European Union, while favoring the free circulation of merchandises, capitals and community citizens, under the perspective of a deep integration process, gradually excludes non-community agents, primarily through the directive on the return of illegal immigrants and the implementation of other measures that look forward to the criminalization of migration. The study considers how these policies violate the fundamental rights of immigrants, contradicting the modern tendency towards universal citizenship.